Condensation product of free resinic acid and organic amine and process of making same



Patented Oct. 15, 1940 CONDENSATION PRODUCT OF FREE RESINIC ACID AND ORGANIC ALIINE AND PROCESS OF MAKING SAME Almon. G. Hovey, Pleasant Ridge, and Theodore S4 Hodgins, Royal Oak, Mich, assignors to 5 Claims The invention relates broadly to improvements in acid-amine condensation products, and the process of, making the same, the present application being a division of our prior application 5 Serial No. 245,018 filed December 10, 1938, which in turn is a continuation-in-part of an earlier application Serial No. 147,569 filed June 10, 1937, now Patent No. 2,153,801 dated April 11, 1939.

In our application Serial No. 245,018 it was shown that valuable products may be produced by fusing together various unsaturated organic acids, particularly polyfunctional carboxylic acids, with organic amines, wherein said acids and amines constitute the sole or at least the 16 principal reacting ingredients. The present application is particularly concerned with the reaction of pyridinewith rosin.

The novel condensation products produced according to our invention have been found to be useful for many diiferent purposes, as for example, as ingredients in the manufacture of coating compositions such as paints, varnishes, enamels,

Reichhold Chemicals, Inc., Detroit, Mich.

No Drawing. Original application December 10, 1938, Serial No. 245,018.

plication July 26, 1939, Serial No. 286,727

Divided and this ap- Example parts of W. W. gum rosin was fused at C. with 20 parts of pyridine for 15 minutes forming a very pale straw colored resin without foaming. The resin had a cure time of 20 seconds on the hot plate at 200 C. The product was insoluble in water, toluol and mineral sph'its, but soluble in acetone and alcohol.

We claim:

and straw colored and having a cure time of 20 seconds on the hot plate at 200 C., the product being insoluble in water, tuluol and mineral spirits rosin and pyridine product is formed.

but soluble in acetone and alcohol.

4. A process which comprises fusing together until a resinous condensation 5. A process of producing a resinous'condensation product which comprises fusing together rosin and pyridine for 15 minutes at 110-175 C. ALMON G. HOVEY. THEODORE S. HODGINS. 

